Results 91 to 100 of about 10,164 (270)

Performance Analysis of Gray‐Coded DP‐16QAM MIMO‐FSO Systems With Coherent Detection and DSP Techniques

Journal of Computer Networks and Communications, Volume 2025, Issue 1, 2025.
The performance of a gray‐coded dual polarization‐16 quadrature amplitude modulation (DP‐16 QAM)–based multiple input multiple output (MIMO)‐FSO link using coherent detection and digital signal processing (DSP) is investigated. The MIMO link is used to mitigate geometric loss, atmospheric attenuation, and atmospheric turbulence.
Zinegnaw Libisework Gelaw, Pushparaghavan Annamalai, Hailu Dessalegn Ayalew, Eduardo Da Silva   +3 more
wiley   +1 more source

Comb-based WDM transmission at 10 Tbit/s using a DC-driven quantum-dash mode-locked laser diode

, 2019
Chip-scale frequency comb generators have the potential to become key building blocks of compact wavelength-division multiplexing (WDM) transceivers in future metropolitan or campus-area networks.
Abderrahim Ramdane, Akrout, Anandarajah, Ataie, Calò, Christian Koos, Di Domenico, Fatadin, François Lelarge, Fülop, Godard, Godone, Hillerkuss, Hu, Huynh, Juned N. Kemal, Kamel Merghem, Kemal, Kikuchi, Lelarge, Leven, Lu, Magarini, Maldonado-Basilio, Marin-Palomo, Mercer, Moscoso-Mártir, Müller, Pablo Marin-Palomo, Pfau, Pfeifle, Pfeifle, Philipp Trocha, Pillai, Rodrigo-Navarro, Rosales, Rosales, Rosales, Savory, Schmogrow, Sebastian Randel, Stefan Wolf, Thompson, Torres-Company, Vedala, Winzer, Wolfgang Freude, Zhang   +47 more
core   +2 more sources

Experimental characterization of a 400  Gbit/s orbital angular momentum multiplexed free-space optical link over 120 m [PDF]

, 2016
We experimentally demonstrate and characterize the performance of a 400-Gbit/s orbital angular momentum (OAM) multiplexed free-space optical link over 120- meters on the roof of a building.
Ahmed, Nisar, Ashrafi, Nima, Ashrafi, Solyman, Bock, Robert, Djordjevic, Ivan B., Huang, Hao, Lavery, Martin P.J., Li, Long, Liao, Peicheng, Neifeld, Mark A., Ren, Yongxiong, Tur, Moshe, Wang, Zhe, Willner, Alan E., Willner, Asher, Xie, Guodong, Yan, Yan, Zhao, Zhe   +17 more
core   +1 more source

Estimation Uncertainties in the Optical Signal-to-Noise Ratio Network Optimization

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this work, we investigate the effects of estimation uncertainties in the optimization of the optical signal-to-noise ratio (OSNR) at the wavelength division multiplexing (WDM) optical networks.
Fábio R. Durand, Guilhereme M. Lopes, Amanda Spagolla, Taufik Abrão   +3 more
doaj   +1 more source

Optical Wireless Performance Monitoring Using Asynchronous Amplitude Histograms

IEEE Photonics Journal, 2021
Optical performance monitoring (OPM) aims to estimate the amount of distortion in optical networks. Its importance relies on building robust and efficient networks with self and dynamic diagnosis.
Maged Abdullah Esmail
doaj   +1 more source

Improving the chromatic dispersion tolerance in long-haul fibre links using the coherent optical orthogonal frequency division multiplexing [PDF]

, 2010
Numerical simulations of the coherent optical orthogonal frequency division multiplexing modems are undertaken to investigate the effect of the adaptive modulation, the number of sub-carriers, the cyclic prefix (CP) length, the clipping ratio ...
Brendon, Cavallari, Färbert, Giacoumidis, Hellerbrand, Jansen, Lowery, Lowery, Lowery, Lowery, Ly-Gagnon, M.A. Jarajreh, Roberts, Shieh, Shieh, Shieh, Simeone, Tanaka, Tang, W.P. Ng, Weber, Z. Ghassemlooy   +21 more
core   +2 more sources

Improved OSNR monitoring technique based on polarisation-nullingmethod

Electronics Letters, 2001
An improved optical signal to noise ratio (OSNR) monitoring technique for wavelength division multiplexed networks based on a polarisation-nulling method is reported. Unlike the previous techniques based on polarisation, the proposed technique was not sensitive to polarisation-mode dispersion and nonlinear birefringence.
Lee, JH, Chung, YC Chung, Yun Chur
openaire   +1 more source

Estimation of QoT in an Operational WDM Transmission System Using Artificial Neural Networks With Deep SHAP and Kernel SHAP Algorithms

International Journal of RF and Microwave Computer-Aided Engineering, Volume 2025, Issue 1, 2025.
In this work, an artificial neural network (ANN) architecture is proposed to estimate the optical signal‐to‐noise ratio (OSNR) used in a dense wavelength‐division multiplexing (DWDM) transmission system in operational stations. The proposed neural network model, using the TensorFlow platform and Deep SHAP and kernel shape interpretation, provides a ...
Mojtaba Amani, Changiz. Ghobadi, Javad. Nourinia, Khair Ayman Al Shamaileh   +3 more
wiley   +1 more source

Amplification technology for spatial division multiplexing signals transmitted using multicore fibres

IET Optoelectronics, Volume 18, Issue 6, Page 179-187, December 2024.
Multicore (MC‐) erbium‐doped fibre amplifier (EDFA) architecture is classified from the viewpoint of the number of erbium‐doped fibre (EDF) cores and its pumping method. In particular, the advantages of cladding pumped MC‐EDFA are shown. Abstract Amplification technologies needed for spatial division multiplexing (SDM) signal transmission have been ...
Hitoshi Takeshita
wiley   +1 more source

Proactive and Nondisruptive Channel Probing for Wavelength Switching in Optical Transmission

IEEE Photonics Journal, 2017
Proactive and nondisruptive channel probing is investigated for the measurement of channel power, amplifier channel gain, and optical signal-to-noise ratio (OSNR) without disrupting established wavelength-division multiplexed channels.
Weiyang Mo, Mariya Bhopalwala, Houman Rastegarfar, Daniel C. Kilper   +3 more
doaj   +1 more source